EP0085145B1 - Breitstrahlende, rotationssymmetrische Strassenleuchte - Google Patents

Breitstrahlende, rotationssymmetrische Strassenleuchte Download PDF

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Publication number
EP0085145B1
EP0085145B1 EP82110218A EP82110218A EP0085145B1 EP 0085145 B1 EP0085145 B1 EP 0085145B1 EP 82110218 A EP82110218 A EP 82110218A EP 82110218 A EP82110218 A EP 82110218A EP 0085145 B1 EP0085145 B1 EP 0085145B1
Authority
EP
European Patent Office
Prior art keywords
lamp
axis
reflector
symmetry
outer diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82110218A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0085145A1 (de
Inventor
Reiner Dr.-Ing. Pusch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT82110218T priority Critical patent/ATE13714T1/de
Publication of EP0085145A1 publication Critical patent/EP0085145A1/de
Application granted granted Critical
Publication of EP0085145B1 publication Critical patent/EP0085145B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature

Definitions

  • the invention relates to a wide-angle, rotationally symmetrical street lamp according to the preamble of claim 1.
  • the invention is therefore based on the object to further develop the known outdoor lamp so that good broad radiation can be achieved with the highest possible efficiency and fulfillment of the conditions of a partial shielding, and under the aggravating condition that a relatively small value is specified for the maximum outer diameter of the reflectors is.
  • the latter requirement is in fact often present in the case of outdoor lights with a small mounting height, such as are used for residential streets and pedestrian areas, the reflector very often being housed within a closed glass ball which is only accessible through a relatively small opening.
  • the conditions for partial shielding are met if the light intensity below 80 ° against the vertical exceeds the limit of 100 cd per klm or max. 2,000 cd and below 90 ° the limit of 50 cd per klm or max. Does not exceed 1,000 cd.
  • the two lowest reflectors are arranged and dimensioned such that the lamp burner is practically completely shielded by them when the lamp is in an optimal position. This is when the center of your burner and the focal point of the parabolas coincide.
  • the part of the lamp located above the burner can then also radiate freely between the second and third reflectors in the interest of good broad radiation; nevertheless, the conditions of partial shielding are surprisingly met.
  • the reason for this is that the luminance in that lamp area is reduced anyway in comparison to the center of the lamp and that the maxima of the Lambert circles are directed upwards due to the bulb curvature, so that they do not contribute to the light intensity in the critical area between 80 ° and 90 °.
  • a fourth reflector is provided according to a further development of the invention, which can either be designed as a closed roof reflector or as a reflector with an opening - with the lamp hanging.
  • Fan-shaped reflectors made of diffusely reflective material are known for decorative interior lighting, but these are only about shielding the lamp and ensuring a good appearance, but questions of targeted light control and efficiency are not addressed; in addition, the scope for design is not restricted by specifying dimensions.
  • the invention is explained in more detail using an exemplary embodiment shown in the figure; it shows schematically the vertical section through an exterior lamp with four reflectors 1, 2, 3 and 4, which are arranged symmetrically about an axis of symmetry A, in which the longitudinal axis of a lamp L with a slurried ellipsoid bulb is located; the burner of the lamp is indicated by dashed lines and designated B and the center of the burner M.
  • the individual reflectors are each rotational surfaces of a generator around the axis of symmetry A; in any case, the generatrix is a section of a parabola whose focal point F lies in the center M of the lamp L; the main axes H of the parabolas each enclose a main axis angle a measured clockwise with the axis of symmetry A below the center M.
  • the following details of the exemplary embodiment are based on a maximum outer diameter D of the second reflector 2 of 220 mm and a 70 watt lamp with a 70 mm bulb diameter.
  • the reflector 1 then has a focal length of 70 mm and a main axis angle a1 of 50 ° and a diameter d1 of the lamp opening of 158 mm, its height h or its outer diameter a1 is dimensioned such that the above-mentioned shielding condition is just met.
  • Above reflector 1 follows reflector 2 with a focal length of 30 mm and a main axis angle a2 of -30 °, its outer diameter D being 220 mm and the diameter d2 of the lamp opening being 122 mm.
  • the third reflector 3 also has a focal length of 30 mm and a main axis angle a3 of -60 °; its outer diameter is also equal to 220 mm and the diameter d3 of the lamp opening is 105 mm.
  • the fourth reflector 4 is finally designed as a closed roof reflector and has parabolic branches with a focal length of 58 mm and a main axis inclination a4 of the main axis H4 of -65 °; its outer diameter a4 is 198 mm.
  • the main axis angles a2, a3 and et4 of the reflectors 2, 3 and 4 are negative, but the main axis angle a1 of the reflector 1 is positive: This means that only the light rays from reflector 1 cross the axis of symmetry A, but not that coming from the other reflectors Light.
  • the top reflector 4 can also have a lamp opening with a diameter d4 of 118 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Light Guides In General And Applications Therefor (AREA)
EP82110218A 1982-02-01 1982-11-05 Breitstrahlende, rotationssymmetrische Strassenleuchte Expired EP0085145B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82110218T ATE13714T1 (de) 1982-02-01 1982-11-05 Breitstrahlende, rotationssymmetrische strassenleuchte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3203284A DE3203284C2 (de) 1982-02-01 1982-02-01 Breitstrahlende, rotationssymmetrische Straßenleuchte
DE3203284 1982-02-01

Publications (2)

Publication Number Publication Date
EP0085145A1 EP0085145A1 (de) 1983-08-10
EP0085145B1 true EP0085145B1 (de) 1985-06-05

Family

ID=6154483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110218A Expired EP0085145B1 (de) 1982-02-01 1982-11-05 Breitstrahlende, rotationssymmetrische Strassenleuchte

Country Status (7)

Country Link
EP (1) EP0085145B1 (no)
AT (1) ATE13714T1 (no)
DE (1) DE3203284C2 (no)
DK (1) DK150757C (no)
GR (1) GR77733B (no)
NO (1) NO159417C (no)
ZA (1) ZA828952B (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10222635A1 (de) * 2002-05-17 2003-12-18 Ilias Efthimiou Fadenabzugsdüse
CN101963321B (zh) * 2009-07-23 2012-06-27 富士迈半导体精密工业（上海）有限公司 路面照明装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE290015C (no) *
DE453026C (de) * 1926-05-26 1927-11-26 Louis Poulsen & Co Reflektoranordnung fuer indirekte Beleuchtung
US1796468A (en) * 1927-07-26 1931-03-17 Main Georges Incandescent electric lamp
GB448412A (en) * 1934-09-03 1935-03-04 Henri Leroudier An improved projecting apparatus for light or heat rays or sound waves
US3593014A (en) * 1969-01-17 1971-07-13 Gen Signal Corp Low level light fixture

Also Published As

Publication number Publication date
DE3203284A1 (de) 1983-08-18
ZA828952B (en) 1983-12-28
DK150757C (da) 1988-04-05
DE3203284C2 (de) 1984-08-02
DK498382A (da) 1983-08-02
GR77733B (no) 1984-09-25
DK150757B (da) 1987-06-15
NO159417B (no) 1988-09-12
NO823750L (no) 1983-08-02
EP0085145A1 (de) 1983-08-10
ATE13714T1 (de) 1985-06-15
NO159417C (no) 1988-12-21

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